<template>
  <div>
    <div class="search">
      <input v-model="keywords" type="text" class="search-input" placeholder="请输入城市名或者拼音">
    </div>
    <div class="search-content " v-show="keywords">
      <ul>
        <li class="search-item border-bottom"
            v-for="item of list"s
            @click="handelChangeCity(item.name)"
        >
          {{item.name}}
        </li>
        <li class="search-item border-bottom" v-show="hasNoData">
          没有找到匹配数据
        </li>
      </ul>
    </div>
  </div>
</template>

<script>
  import {mapMutations} from 'vuex'//mapMutations一定要拼写正确
  export default {
    name: "city-search",
    data() {
      return {
        keywords: '',
        list: [],
        timer: null
      }
    },
    props: {
      cities: Object
    },
    computed: {
      hasNoData() {
        return !this.list.length
      }
    },
    watch: {
      keywords() {
        if (!this.keywords) {
          this.list = [];
          return
        }
        if (this.timer) {
          clearTimeout(this.timer);
        }
        this.timer = setTimeout(() => {
          let result = [];
          for (let index in this.cities) {
            this.cities[index].forEach(city => {
              if (city.spell.indexOf(this.keywords) > -1 || city.name.indexOf(this.keywords) > -1) {
                result.push(city)
              }
            })
          }
          this.list = result
        }, 100)
      }
    },
    methods:{
      ...mapMutations(['changeCity']),
      handelChangeCity(city) {
        this.changeCity(city);
        this.$router.push('/')
      }
    }
  }
</script>

<style lang="stylus" scoped>
  @import "~styles/variable.styl"
  .search
    height: .72rem
    padding: 0 .1rem
    background: $bgColor
    .search-input
      box-sizing: border-box
      width: 100%
      height: .62rem
      padding: 0 .1rem
      line-height: .62rem
      text-align: center
      border-radius: .06rem
      color: #666

  .search-content
    z-index 1
    overflow hidden
    position absolute
    top 1.58rem
    left 0
    right 0
    bottom 0
    background #eee
    .search-item
      line-height .62rem
      padding-left .2rem
      background #fff
      color #666
</style>
